1. If the distribution of IQ is centered at 100 , and has a standard deviation o

Question

1. If the distribution of IQ is centered at 100 , and has a standard deviation of 10, then what is the IQ Z-score of someone who has an IQ of 116?

A) 1.6
B) -1.6
C) 16
D) 0.8
E) Cannot determine

2. Bob did not study for his exam and got a z-score of -2.25. The exam had a mean of 24 and a standard deviation of 4. What score did Bob get?
A) 15
B) 19
C) 24
D) 18
E) 11

3. In a population of people where the average weight is 160 and the standard deviation is 10, what proportion of the people have a weight above 170?
A) 0.16
B) 0.84
C) 0.5
D) 0.34
E) Cannot determine

Explanation / Answer

1)A

2)A

3)A

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